New Patent: Canon EF-S 9-20mm F4.5-5.6 IS Lens

Canon patent EF-S 9-20mm lens

Canon has just filed a new patent of EF-S 9-20mm F/4.5-5.6 IS Lens. This new lens is a wide-angle zoom lens for Canon APS-C DSLRs.

Patent Publication No. 2015-31869

  • Published 2015.2.16
  • Filing date 2013.8.5

Example 1

  • Focal length 9.50 14.52 19.70
  • F-number 4.64 5.21 5.80
  • Half angle (in degrees) 55.17 43.26 34.74
  • Image height 13.66
  • Overall length of the lens 143.95 134.71 134.11
  • BF 38.00 47.58 56.42

Source: EG

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